Page 1 of 2 12 LastLast
Results 1 to 10 of 19

Thread: Help / Advice needed - MOT Fail!

  
  1. #1
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)

    Exclamation Help / Advice needed - MOT Fail!

    Hi all.

    Car failed today
    "Rear brake application uneven" - Which they've provisionally quoted at £27.50

    "Exhaust Emissions incorrect" - They've quoted labour @ £49.99 to investigate!
    • Are they just quoting me for new brake shoes?? (might explain the rubbing from the rear, I thought maybe it was bearings)

    • Now, the car did sound a bit blowy from the exhaust, nothing major, I guessed at baffles gone again, didn't expect the fail. Could this be the cat that's broken down? Causing my emissions fail? If so what would be the cost of a new cat and is it something I can do myself? If not cat what else could it be, they mentioned an air leak?!?!
    My TAX runs out this month, so need to get an MOT ASAP!

    Oh, do I void a retest by doing this work myself??


    Thanks guys,

    John.
    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  2. #2
    Status
    Offline
    stevej66's Avatar
    Tech Advisor/Moderator
    Join Date
    Jun 2009
    Location
    on the sofa
    Posts
    7,074
    Mentioned in
    52 Post(s)
    Quoted
    240 Post(s)
    if you take the car from the test centre and do the repairs, then they will charge either a full or partial re-test fee. normally no charge if they do the work. post up the emissions from the MOT, this will help us to judge what the fault is. i would say the price quote for rear brakes will be a basic adjustment or drum off to see what is causing uneven readings

  3. #3
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)
    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  4. #4
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)
    Thanks by the way .......
    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  5. #5
    Status
    Offline
    sport-hatch150's Avatar
    AOC Obsessed
    Join Date
    Jun 2007
    Posts
    1,907
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    I think he rear brakes will be partially ceased. Probably just needs freeing up and a bit of copaslip. For the emmisions I would do a plug change and a dose of redex before i did anything expensive.

  6. #6
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)
    Quote Originally Posted by sport-hatch150 View Post
    I think he rear brakes will be partially ceased. Probably just needs freeing up and a bit of copaslip. For the emmisions I would do a plug change and a dose of redex before i did anything expensive.
    Really?! A plug change and redex is gonna drop my emission count? Hmmm, I think it's a little more than that ....
    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  7. #7
    Status
    Offline
    stevej66's Avatar
    Tech Advisor/Moderator
    Join Date
    Jun 2009
    Location
    on the sofa
    Posts
    7,074
    Mentioned in
    52 Post(s)
    Quoted
    240 Post(s)
    the lambda is not switching, it is either clogged up or has gone lazy.try a new lambda but make sure it is a genuine bosch unit

  8. #8
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)
    So you don't think it's a cat problem? Is there a way I can test the lambda sensor?

    J
    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  9. #9
    Status
    Offline
    DJAv's Avatar
    AOC Premium Member
    Join Date
    Jun 2007
    Drives
    Astra H Design 2.0T
    Location
    Cambridgeshire
    Posts
    1,414
    Mentioned in
    8 Post(s)
    Quoted
    31 Post(s)
    Assuming the "O2 Voltage Bank One Sensor One" is my Lambda. Would this graph shown on my ODBII software, show the Lambda is switching as expected?

    Astra MK4 SXI 1.6 Twinport [Z16XEP] (2004) & Astra MK5 Design 2.0T [Z20LEL] (2006) & Zafira MK1 [Z18XE] (2003)|| Astra MK4 1.6 SXI [Z16XE] (2002) || Astra MK5 VXR [Z20LEH] (2007) || Astra MK4 1.6 SXI [Z16XE] (2001) || Vectra MK2 1.6 LS (1999) || Astra MK2 1.4 Merit (1990)

    Click here for the How To's

  10. #10
    Status
    Offline
    stevej66's Avatar
    Tech Advisor/Moderator
    Join Date
    Jun 2009
    Location
    on the sofa
    Posts
    7,074
    Mentioned in
    52 Post(s)
    Quoted
    240 Post(s)
    the graph you show is for lambda, but your emissions print out sheet shows the only point you failed on was no switching of the lambda. this is either becasue the lambda is lazy or the cat is not getting hot enough during the test, but overall emission results were good and show the cat is at least working

Page 1 of 2 12 LastLast

Similar Threads

  1. Advice on mot fail
    By rob_ryan in forum Astra Discussion & Chat
    Replies: 3
    Last Post: 29-01-2012, 19:51
  2. Help and Advice with MOT fail?
    By stu2525uk in forum Astra Discussion & Chat
    Replies: 3
    Last Post: 18-08-2010, 22:02

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •